2011 AMC 10A Problems/Problem 3
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Contents
Problem 3
Suppose [
] denotes the average of
and
, and {
} denotes the average of
,
, and
. What is
?
Solution
Average ,
, and
to get
. Average
, and
, to get
. Average
,
, and
. to get
Video Solution
~savannahsolver
See Also
2011 AMC 10A (Problems • Answer Key • Resources) | ||
Preceded by Problem 2 |
Followed by Problem 4 | |
1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | ||
All AMC 10 Problems and Solutions |
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